Improvement in adjustable shackles for carriage-springs



J. BULLARD.

a Carriage-Spring Shackle. No-110.006. I j Patnted Ben 13,1870

N, PETERS. Mmha nwm, Washin ton. D. c.

'Tfinited swa apartm- Glillflire.

carriages;

JOHNBULLARD OF NORTH HYDE. PARK, VERMONT.

Letters Patent No. 110,006, dated December 13, 1870.

IMPROVEMENT IN ADJUSTABLE SHACKLES FOR CARRIAGE-SPRINGS The schedule'referred to in these Letters Patent and making part of the same.

To all whomit may concern Be it known thatfI, JOHN BULLARD, of North Hyde Park, in the county of Lamoille and. State. of "ermont, have invented anew and useful Improvement in bhacklcs for Garriage-Springs; and I dohcreby'declare the following to be a full, clear, and

exact description thereof, sntficient to enable those skilled in the art to which my invention zmpertains to fullyunderstand and to make and use the same,

reference 'being bad to the accompanying drawing forming part of this specification, and in which to which it'is attached; and

Figure 2 is a top view of the shackle and part of the rockers 1 a Similar letters of reference indicate'like parts in My invention relates to that class of shackles which Figure Us a s'ectionof theshackle and the rocker' is secured transversely to-the rocker, near the ends thereof, for the attachment of the side springs of with shackles as heretotbre constructed, if there was a dilierence between the springs on the same vehiclcpor in case ot the load being heavier upon one side than on the other, these defects could not beeaslly remedied, if at'all.

- My improvement consistsin making an adjustable .shackle, whereby the springs eithcr or both, can be readily tightened-as required, so as to make the body ,of the wagon balance evenly.

' Referring to the drawing a 1 A represents a portion of what is known as the t rocker ot' a wagon, carriage, or other vehicle, which is the part resting upon the axleor upon the ordinary elliptic. spring secured to the axle;

B'represents the lower plate of the-shackle, fin-medwith a vertica'rl'flangelor lip, b, and secured across the rocker, near the end thereof byscrews or bolts or in any other approved manner.

' 0 is the upper plate of the shackle, made with a slot, c, and carrying a loop, (1, which is attached, so

as to swing freely, by-bending over the end of the plate. p

The plate 0 is held in contact with the lower plate by a headed bolt, 1), passing through the slot in the upper plate, a round or square. opening in the plate B, and thence through the rocker, being provided atits lower end with a nut,

. The end of the side spring is bent and hooked onto.

the link or loop (I.

In order to prevent the slipping of the upper plate of" the shackle 1 form rows of teeth 0 at the sides of the lower plate which engage with corresponding indentations, a, in the plate .0, as shown in lig. 2, said plate being made with flanges atthe sides, in which the teeth '1} are formed.

s Instead of teeth a i, as just described, the contiguous surfaces of the plates B 0 may be transversely ribbed and grooved, as shown at o 0, fig. 1; or the same result may be accomplished by tbrming, on the one plate, short pins or studs adapted to entcr corresponding recesses in the other, as represented at 's s, in dotted lines, fig. l. I

To adjust the shackle the nut f is loosened to permit the -.discngagcnu-nt ot' the plate or cap 0,

which .is then moved,tightening or slackening the attached spring as required, and is again made fast by screwing up the nutf until the ribbed or toothed surfaces are engaged and bound rigidly together.

The device is obviously simple, durable, and effective, and, on account of its easy adjustment, will proyc 'highly useful for correcting any inequalit-y in tho --springs or unequal disposition of-the load. 

